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Troubleshooting an Aggregated Ethernet Interface

Problem

The show interfaces terse command shows that the LAG is down.

Solution

Check the following:

  • Verify that there is no configuration mismatch.
  • Verify that all member ports are up.
  • Verify that a LAG is part of family ethernet—switching (Layer 2 LAG) or family inet (Layer 3 LAG).
  • Verify that the LAG member is connected to the correct LAG at the other end.
  • Verify that the LAG members belong to the same switch (or the same virtual chassis).
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